Error when trying to access /gallery2/main.php

the error is :

Warning: Missing argument 1 for create() in /usr/local/psa/home/vhosts/npereira.com/httpdocs/gallery2/modules/core/classes/GalleryGroup.class on line 116

and repeats several thousand times. Looks like it loops.

I have not setup this version of gallery before. I setup my config.php as per documentation. Also, when trying to access the gallery2/setup/setup.php, I get a DNS error although the file is there and the dns is correct.

Please advise.